Jan Grabowski is a professor in the Department of History at the University of Ottawa. He is the author of Hunt for the Jews: Betrayal and Murder in German-Occupied Poland (IUP, 2013), which was awarded the Yad Vashem International Book Prize.

Barbara Engelking is the founder and director of the Polish Center for Holocaust Research in Warsaw. Her books include Holocaust and Memory: The Experience of the Holocaust and its Consequences, The Warsaw Ghetto: A Guide to the Perished City, and Such a Beautiful Sunny Day: Jews Seeking Refuge in the Polish Countryside, 1942-1945.